The 1956 Argentine Grand Prix was the first race of of the 1956 World Championship of Drivers. Olivier Gendenbein finished 5th with this Ferrari 555F1 Supersqualo number 38.

Fangio was a non factor with a faulty fuel pump. He took over Musso's car on lap 29 and re-entered in fifth place. Fangio quickly passed Behra but lost his position after spinning. From laps 40-43 disaster struck the leaders. While third Castellotti's gearbox broke, Menditeguy left the lead with a broken driveshaft, and new leader Moss's engine began to smoke. Fangio, who had overtaken Behra, passed the ailing Moss on lap 66 and finished unchallenged after Behra spun late.

Olivier Jean Marie Fernand Gendebien (1924 –1998) was a Belgian racing driver who was called "one of the greatest sportscar racers of all time".Gendebien's success in rally competitions brought him to the attention of Enzo Ferrari, who offered him a contract to drive a Ferrari in sports car events and selected Grands Prix. Much respected as a true gentleman by everyone who knew him, he remained a member of the Ferrari team until he retired from racing. Enzo Ferrari summed him up as "a gentleman who never forgets that noblesse oblige and, when he is at the wheel, he translates this code of behaviour into an elegant and discerning forcefulness. During his career he competed in only 15 Formula One races as most of the time he was Ferrari's spare driver, filling in only occasionally. He nonetheless scored points in five races, and was only one place away from a points-scoring finish on a further two occasions. However, it was in sports car racing, particularly the long distance and endurance events, where Gendebien excelled.  Major race victories

Tour of Sicily : 1957 - Tour de France Automobile : 1957, 1958, 1959 - Reims 12 Hours : 1957, 1958 - Targa Florio : 1958, 1961, 1962 - 12 Hours of Sebring : 1959, 1960, 1961 - 24 hours of Le Mans : 1958, 1960, 1961, 1962 - 1000km Nürburgring : 1962

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